... that really chaps my hide: loose toilet seats.
I know you thought I was going to say, "Republicrats" or "high gas prices" but those don't bother me nearly as much as a loose toilet seat.
There is no excuse for a loose toilet seat. It doesn't even require tools to fix. There is just a little plastic nut on the filthy underside of the toilet. Reach back there and give it a twist.
And then wash your hands really good. It's pretty gross under most toilet seats.
I know a guy who pinched his nut sack pretty badly when the toilet seat slipped, trapping him between the seat and bowl. He cried like a baby.